<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Create 3D Geometry from PNG file (heightmap)</title>
    <link rel="stylesheet" href="/css/examples.css?ver=1.0.0" />
    <script src="/js/examples.js?ver=1.1.1"></script>
    <script src="/lib/phaser.min.js?ver=3.52.0"></script>
    <script src="/lib/enable3d/enable3d.phaserExtension.0.22.0.min.js"></script>
  </head>

  <body>
    <div id="info-text">
      This heightmap has been created from
      <a href="/assets/heightmap/heightmap-simple.png"> this png file</a>.
    </div>
    <script>
      const { enable3d, Scene3D, Canvas, THREE } = ENABLE3D

      class MainScene extends Scene3D {
        constructor() {
          super({ key: 'MainScene' })
        }

        init() {
          this.accessThirdDimension({ maxSubSteps: 10, fixedTimeStep: 1 / 180 })
        }

        async create() {
          this.third.warpSpeed('-ground')
          this.third.camera.position.set(20, 20, 40)
          this.third.camera.lookAt(0, 0, 0)

          this.input.on('pointerdown', () => {
            this.third.haveSomeFun(1)
          })

          // load grass texture
          const grass = await this.third.load.texture('/assets/img/grass.jpg')
          grass.wrapS = THREE.RepeatWrapping
          grass.wrapT = THREE.RepeatWrapping
          grass.repeat.set(4, 4)

          // height map from http://danni-three.blogspot.com/2013/09/threejs-heightmaps.html
          this.third.load.texture('/assets/heightmap/heightmap-simple.png').then(heightmap => {
            const mesh = this.third.heightMap.add(heightmap)
            if (mesh) {
              // add custom material or a texture
              mesh.material = new THREE.MeshPhongMaterial({ map: grass })

              // we position, scale, rotate etc. the mesh before adding physics to it
              mesh.scale.set(2, 2, 2)

              // @ts-ignore
              this.third.physics.add.existing(mesh, { mass: 0, collisionFlags: 1 })
            }
          })
        }
      }

      const config = {
        type: Phaser.WEBGL,
        transparent: true,
        scale: {
          mode: Phaser.Scale.FIT,
          autoCenter: Phaser.Scale.CENTER_BOTH,
          width: window.innerWidth * Math.max(1, window.devicePixelRatio / 2),
          height: window.innerHeight * Math.max(1, window.devicePixelRatio / 2)
        },
        scene: [MainScene],
        ...Canvas()
      }

      window.addEventListener('load', () => {
        enable3d(() => new Phaser.Game(config)).withPhysics('/lib/ammo/kripken')
      })
    </script>
  </body>
</html>
